The hex color #4c586c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#B3A793. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#7F8B9F, and Hex
#192539 is the 20% darker color. If the color is saturated by 10%, you get
#4B586E. If the color is desaturated by 10%, the color
#4D586A is obtained.